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Ancient Architects on MSN
3,000-year-old temple hid a secret - until now
Archaeologists have finally entered a system of hidden tunnels beneath the 3,000-year-old Chavín de Huántar temple in Peru. Once a site of pilgrimage and ritual, this temple has been guarding its ...
Behind more than 70 million high-speed rail journeys a year lies a web of safety systems. At nearly 200 mph, even a single ...
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